NEX-F3 frustration--is this related to ISO 200?

i think the difference is jpegs... i liked the jpegs out of my panasonic zs7 better than out of my nex-3. they seemed to have better contrast and more vivid color. but obviously you can tweak the jpegs in the nex. i would also play around with an editing tool, like picasa to see if that makes a difference to you (boost contrast, add warmth, etc.).